groff: Additional ms Macros

 
 4.3.7.2 'groff' macros not appearing in AT&T 'troff'
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 The 'groff -ms' macros have a few minor extensions compared to the AT&T
 'troff -ms' macros.
 
  -- Macro: .AM
      Improved accent marks.  ⇒ms Strings and Special Characters,
      for details.
 
  -- Macro: .DS I
      Indented display.  The default behavior of AT&T 'troff -ms' was to
      indent; the 'groff' default prints displays flush left with the
      body text.
 
  -- Macro: .CW
      Print text in 'constant width' (Courier) font.
 
  -- Macro: .IX
      Indexing term (printed on standard error).  You can write a script
      to capture and process an index generated in this manner.
 
    The following additional number registers appear in 'groff -ms':
 
  -- Register: \n[MINGW]
      Specifies a minimum space between columns (for multi-column
      output); this takes the place of the 'GW' register that was
      documented but apparently not implemented in AT&T 'troff'.
 
    Several new string registers are available as well.  You can change
 these to handle (for example) the local language.  ⇒ms Strings and
 Special Characters, for details.